Machine for dressing stone.



M. WOODS, G. W. GILBERT & I. LITTLE.

MAcHmE For: DRESSING STONE.

APPLICATION FILED FEB. 6. 1912. I

Patented Apr. 6, 1915.

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M. WOODS, G. W. GILBERT & l. LITTLE.

MACHINE FOR DRESSING STONE. APPLICArIoN FILED rss/6, |912.

11,134,658, Patented Apr. 6, 1915 3 SHEETS-SHEET 2.

-'con M. WOODS, G. W. GILBERT & I. LITTLE.

MACHINE FDR DRESSING STONE.

APPLICATION FILED FEB. D, i912.

Patented Apr. 6, 1915.

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iiNrrEn sTaTEs PATENT epm@ MICHAEL WOODS, GEORGE WASHINGTON GILBERT, AND JOI-IN LITTLE, OF MELBOURNE,

VICTORIA, AUSTRALIA.

MACHINE FOR DRESSING STONE.

1,134,658. Original application filed. .Tune 3, 1910,

To all whom it may concern:

Be it known that we, MICHAEL Woons, a subject of the King of Great Britain and Ireland, and resident of 309 Pigdon street. Princes Hill, Carlton, a postal division and suburb of the city of Melbourne, in the county of Bourke, State of Victoria, Commonwealth of Australia, GEORGE WASHING- TON GILBERT, a subject of the King of Great Birtain and Ireland, and aresident of 60 Queen street, in the city ofl Melbourne, in the county, State, and Commonwealth aforesaid, but who is temporarily visiting London, England, and JOHN LITTLE, a subject of the King of Great Britain and Ireland, and a resident of 9 Nelson road, in the posttown of Camberwell, a suburb of the city of Melbourne, in the county, State, and Commonwealth aforesaid, have invented a certain new and useful Machine for Dressing Stone, of which the following is a specification.

In the art of dressing stone, particularly hard building stone, such as granite, the slowness and number of operations at present involved in reducing the material from its rough state to a finished condition, and the employment of manual labor to produce some eifects desired, are very costly. In addition, the extreme accuracy desirable has voften been lacking and stone varying in teX- ture has frequently been considered unworkable, or when such has been attempted it has been unsuitably finished.

The object of this invention, is primarily to considerably reduce the present dressing expense by dispensing with manual skill and reducing the material, as received from the rapidity, to a highly finished condition, without a complexity of operations and irrespective of the varying hardness of the stone.

This invention, for practical and economic Operation on a commercial scale, requires but a comparatively inexpensive equipment to produce satisfactory results, both rough dressing' and polishing being carried out `without interfering with the stone position, i. c. in one operation. Further stone considered unworkable at present may be utilized.

This application is a divisional applica- Specification of Letters Patent.

quarry, with cheapness, eXactness, and great tion from the originalLV application, Serial4 No. 564,865, filed J une 3rd,`l9l0, and the invention relates to a machine for carrying out the process of dressing stone referred to therein. y

In the accompanying drawings, the machine is illustrated showing how the invention may be carried into eect, three faces of a siX-sided stone block being under treatment.

According to the invention, the tools are reciprocated against the stone which is stationary, each tool making a thin cut or shallow impression upon the stone for its'full length. The tools then side-feed and takey dressing tools may, if necessary, when thel stone is smooth, be removed andl othersr sub- Patented Apr. 6, 1915. y

Serial` No. 564,865.y Divided and this application filed February 6,

1912. Serial No. 675,760.

stituted for polishing the face. It has been p found desirable, in the drawings, to omit diverse minor details not affecting thek general invention, for clearness, and this, as well as various objects and advantages not already mentioned, will be hereinafter more fully apparent. vBut in Order that this invention may be better understood reference will now be made to the accompanying r sheets of drawings which are to be taken as part of this specification and read here'- with Figure l is an end of a machine embodying the invention, for clearness a first shaft, first and second pulleys, belts and other parts being removed. A traveler has reached the end of its journey in one direction and is about to reverse. The tools also are about to infeed and reverse the direction of their side feed. Fig. 2 is an enlarged detailed view of a slideway and portion of a bracket suspended therefrom relative to `Fig. l. Fig. 3 is an enlarged detailed view of bevel and ratchet lgear for moving the bracket, referred to in Fig. 2, inwardly and outwardly. Fig. 4 is a left side elevation according to Fig. 1, the traveler having completed half of its journey, and portions are broken away for convenience of illustration. Fig. 5 is an enlarged plan of a former within which is a slot having therein a roller. Fig. 6 is an enlarged detailed view of a double pawl operated ratchet wheel upon Va worm shaft infeeding a top dressing tool. Fig. 7 is an enlarged end view of a top slide and dressing wheel and infeed gear thereto. Fig. 8 is an enlarged detailed view of a former showing its attachments to themachine. Fig. 9 is a plan according to Figs. 1 and 4, t-he traveler having completed half of its journey, portions being broken away for convenience of illustration. Fig. 10 is a slightly enlarged detailed view of the infeed and side feed gear of a side bracket and top slide according to Figs. 1, 4, and 9. Fig. 10a is a part plan corresponding to Fig. 10.

In carrying out the invention above (Figs. 1, 4, and 9), each of two rows of uprights 200 is a girder 201, between which is a first shaft 202, having thereon a first pulley 203, driven by a belt 204. Upon the first shaft is also a second pulley 205. Upon the second shaft 206 is a third pulley 207. Attached to the girder adjacent t0 the pulleys is a stop holderl 208, provided with two longitudinally adjustable stops 209. From the other girder, and capable of longitudinal adjustment, extends a short trip pillar 210, and a long trip pillar 211.

Upon each girder 201 rests two flanged wheels 212. Between one pair of wheels extends a first axle 213, and between the other pair of wheels a second axle 214. These axles support side frames 215, united by a cross piece 216, beneath which (F ig. 2) is a slideway 217. In this slideway may be holes or slots to pass gearing hereinafter described. The wheels, axles, side framesV and cross piece form a traveler. Between the side frames of the traveler extends a third shaft 218, upon which is a fourth pulley 219. Loose upon the first axle 213, is a fifth pulley 220, to which is attached a bevel wheel 221, and upon the said third shaft is attached an elongated sixth pulley or drum 222.

Passing over the second pulley 205 and fifth pulley 220 is a belt 223. This passes over the fourth pulley 219, over the third pulley 207 to the second pulley 205, and drives the bevel wheel 221, which in turn drives two loose bevel wheels 224, turning loosely upon a side shaft 225 of the traveler. Controlling each bevel wheel 224 is a clutch 226, each of which is controlled by a lever 227, pivoted to a stud 228, protruding from the traveler. Between the levers 227 is a connecting rod 229. Upon the side shaft 225 is a worm 230, turning a worm wheel 231 upon the second axle 214. By the belt 223 and pulleys over which it passes the traveler is propelled, automatically reversing as ea ch lever 227 comes in contact with one of the stops 209.

Suspended to the slideway 217, and moving thereupon, are two brackets 232. 1n (see particularly Fig. 1 or 10) a nut bearing 233 attached to each bracket turns a nut, 234, to which is secured a bevel wheel 235, engaging with two (see also Fig. 3) bevel wheels 236, both operable by a hand wheel 237, and also each by a ratchet wheel 238. Engaging with each ratchet wheel 238 is a pawl 239 pivoted to a lever 240, operated as hereinafter described. rThrough each nut 234 passes a screw 241, the inner end of which turns in a screw bearing 242. )V hen treating a straight surface the outer end of each screw 241 accommodates the lower end of a plain pin 243, the upper end of which, by a locking screw 244, is secured to a bracket upon the traveler. Instead of the outer end of each said screw being secured by a pin 243, it (Figs. 4 and 8) may engage with a former 245, in which is a slotway 240, through which passes a pin, having a roller 247 thereon. Or any other suitable former may be used. @ther than straight surfaces may in this manner be treated. Turning within each bracket is a vertical spindle 24 driven by a pulley 249, and a belt from the elongated pulley 222. Upon this spindle is a pulley 250, capable of rising and falling thereupon.

Capable of moving up and down each bracket is a slide 251, in bearings upon which turns a shaft 252, carrying a dressing wheel 253, driven by a pulley 254 and a belt from its respective pulley 250. From each slide prctrudes arms 255 to aline each pulley 250. To each slide is attached a nut 256, in which turns a screw 257, upon which is a hand wheel 258 and a bevel wheel 259. Adjacent to each slide is a reversing rod 260, having attached thereto two adjustable collars 261. To the top of each reversing rod is pivoted the lower member 252 of a bell crank lever turning upon a stud 263, protruding from each bracket. rlfhe top of the Lipper member 264 of the bell crank lever is pivoted to a connecting rod hereinafter referred to. Upon the slide pressing against either of the collars 261 the respective bracket is moved inwardly by the niit 234 and screw 241, and carries with it or infeeds the dressing tool, as will be hereinafter understood.

In suitable bearings, attached to the traveler, is a shaft 265, to which is attached a bevel wheel 266 engaging with upper and lower bevel wheels 267, to which are attached ratchet wheels 238. Loosely pivoted to the spindle supporting each bevel wheel 26.7 is the inner end of a loose arm 269, retained in its normal position by a spring 270, or. the like. To each arm is pivoted a pawl 271,y each engaging with one of the ratchet wheels 268. Loose upon the said shaft 265 are two right bevel wheels 272, and two left bevel wheels 273. `Each wheel 272 is controlled by a right clutch 274, and each wheel 27 3by a left clutch' 27 5. Each clutch is operated by a lever 27 6, supported by a stud 277, protruding from each bracket 232. Pivoted near the lower end of each lever 276 is a connecting rod 278, hereinbefore mentioned. Upon either loose arm 269 striking one of the trip pillars 210, 211, the shaft 265, by the bevel gearv thereupon, moves or side feeds the slides 251 vertically.

Upon each slide 251, by the collars 261, op-y erating its reversing rod k260-and bell crank lever pivoted thereto, the clutches 274, 275 are actuated reversing the travel or side feed of the slide. Along the slideway 217 moves (Figs. 7 and 10) a slide 279, beneath which aredroppers 280. This slide may have slots or holestherein to pass gearing hereinafter described. In each dropper is a hole to accommodate an eccentric bearing 281, having a holeto accommodate a shaft 282, on which is a pulley 283 and a dressing tool 284. The pulley is driven by a belt from the elongated pulley 222. Y Inthe bearing attached to the slide 279 turns a nut 285, rotated by a bevel wheel 286. Passing through the nut is a screw 287, suspended from the slideway 217 in any suitable manner.

To the eccentric bearings 281 are attached the inner ends of levers 288, the outer ends of which are united by a bridge 289, to which is attached a circumferential toothed sector 290, engaging a worm 291 attached to a worm shaft 292, upon which (Fig. 6)V is a ratchet wheel 293, operated by a double pawl 294, upon the end of a connecting rod 295. By actuation of the ratchet wheel the dressing tool is infed toward the stone.

Loose upon the shaft 265 is a right bevel wheel 296, controlled'by a right clutch 297 and a left bevel wheelv 298, controlled by a left clutch 299. Each clutch is operated by a lever 300, turning upon a stud 301 protruding fromthe slide 279. The outer ends of the said levers are united and controlled by the 'connecting rod 295. `With the two loose bevel wheels engages a lower double bevel wheel 302, turning the bevel wheel 286 and rotating the nut 285. Extending across the slot or hole, hereinbefore mentioned, in the slideway are two tappet pins 303 (shown in broken lines) against which the lower ends of the levers 300 make impact, thereby operating the clutches 297 vand 299, and reversing the side feed or slide travel.

Beneath the traveler (Figs. 1, 4 and 9) are rails 304 supporting a truck 305, upon which is secured in any suitable way, the stone 306 to be dressed. Below the truck is a hydraulic cylinder 307, having a ram 308,

the top of which, in anysuitable way, can be secured tothe bottom ofthe truck. The said ram has a worm wheell 309 around it, turned by a worm 310 upon a worm shaft 311'. The shaft 311 may be rotatedby hand, orfautomatically at the end of each journey of thel` traveler, thereby permitting of circular stones.

The cycle of operations is as follows: The stone beingpositioned upon the truck 305,

the treatment the truck is elevated from the rails 304 by' the hydraulic ram 308. The 'belt 204 thenrotates the pulleys 203 and 205', which by the belt 223 and pulleys described drives the travelerby the bevel vwheels 221, 224,

worm 230 and worm wheel 231.` Upon one of the levers 227 striking a stop 209 thev clutch 226 controlled by that lever is disen` 5 gagedfrom its bevel wheel 224, and the other clutch and bevel wheel engaged, re-

versing the shaft 225 and the traveler. The v traveler is thus automatically reciprocated.

, When the traveler has moved from one end of the stone to the other, each dressingtool y has made a shallow impression or cut a' pathway upon the stone.` @ne of the arms 269 then contacts against one'of the trip pillars 210,211 operating, by its pawl, 271 and ratchet 268, lthe bevel gear 267, 266 and rotating theshaft 265. Upon the shaft rotating, the bevel gear 259, 272, 274 is operated, and by the nuts 256 and screws 257 side feeds the dressing tools 253 into a new' position. Upon the shaft 265 rotating the bevel gear 296, 298, 302, is also operated and by the nut 285 and screw 287 side feeds the dressing tool 284 into a new position. WhenV the dressing tools 253 have traveled overv the whole of their stone surfaces, each of the?` slides 251contacts with one of the collars 261 operating the reversing Arod 260, andv y actuating through the bell crank lever pivoted thereto the connecting rod 278. As each connecting rod moves, it not only, by the levers 276, throws one of the clutches 274,

275 into gear and disengages the other, thereby reversing the slide side feed but also operates the lever 240. Upon each lever 240 being operated, through the pawls 239,1

ratchets 238 and bevel gear 236, 235, each nut 234 is turned and moves along its screw 241,

carrying its bracket 232 with it. This in- 'feeds each dressing tool' 253. dressing tool 284 has traversedthe whole of its stone surface, one of the levers 300 makes contact against one of the pins 303. This,-

by the connecting rod 295, disengages one of When the the clutches 297, 299, and engages the other,

bearings 281, which, by their eccentricity,

infeed the dressing tool 284i When using formers 245 it is clear that as the .traveler reciprocates and carries with it the roller 247 of each? former, each roller must follow the conformation of its slot 246, and will move its respective bracketf232 inwardly and outwardly. Each dressing tool 253 thereby moves laterally conforming the stone to the shape of the former slot. The hereinbefore described operations of the slide and ratchet are not, however, interfered with. When rounding a stone or treating a round stone theramBOS, truck 305, and stone 306, are rotated by the worm 310, worm shaft 311, and worm wheel 309, the other movements of the machine still continuing the same. To polish a stone surface in either embodiment the pawls 79 and 80, 239 and 294 of the infeed gears are disengaged.

Having now described our invention what we claim asnew and desire to secure by Letters Patent is l. In improvements relating to the dressing of stone, a slideway, means for reciprocating said slideway, brackets suspended from said slideway, a slide upon each bracket a dressing tool carried by each slide, means for side feeding each slide along its bracket, means for infeeding each tool toward the stone, means for reversing the side feed of each slide, a slide upon said slideway, a dressing tool carried by said slide, means for side feeding said slide upon said slideway, means for infeeding said dressing tool, meansfor reversing the side feed of said slide.

2. In improvements relating to the dressing of stone, a traveler, means for driving said traveler, means for reversing said traveler, a slideway upon said traveler, brackets suspended from said slideway, a slide upon each bracket, a dressing tool carried by each slide, means for rotating said dressing tools,

means for side feeding each said slide and the dressing tool carried thereby, means for infeeding each bracket and the slide and dressing tool carried thereby, means for reversing the side feed of each slide.

3. In improvements relating to the dressing of stone, a traveler, means for reciprocating said traveler, a slideway upon said traveler, brackets suspended from said slideway, a slide upon each bracket, a dressing tool carried by each slide, means for rotating each said dressing tool, means for side feeding each dressing tool, means for infeeding each said dressing tool, means for reversing the side feed of each slide and dressing tool, a former adjacent to each bracket, means for guiding each bracket as it reciprocates with the traveler by its respective former.

la In improvements relating to the dressing of stone, a slideway, means for reciproeating said slideway, a bracket suspended to said slideway, a slide upon said bracket, a

dressing tool carried by said slide, means for rotating said dressing tool, means for side feeding the slide along said bracket, means for infeeding said dressing tool by moving the bracket along the slideway, means for reversing the side feed of each slide as each infeeding movement takes place.

5. In improvements relating to the dressing of stone, a traveler, means for reciproeating said traveler a slideway upon said traveler, brackets suspended from said slideway, a slide upon each bracket, a dressingtool carried by each slide, means carried by said traveler and actuated by its reciprocation for side feeding cach of said slides, means actuated by each slide for reversing its side feed and infeeding its respective bracket toward the stone.

6. In improvements relating to the dressing of stone, a traveler, means for reciproeating said traveler, a slideway upon said traveler, brackets suspendedy from said slideway, a slide upon each bracket, a dressing tool carried by each slide, means carried by said traveler and actuated by its reciprocation for side feeding each of said slides means actuated by each slide for reversing its side feed and infeeding its respective bracket inwardly toward the stone, a former adjacent to each bracket, means for guiding each bracket as it reciprocates with the traveler by said former.

7. In improvements relating to the dressing of stone, a traveler, means for reciproeating said traveler, a slideway upon said traveler, a slide upon said slideway, a dressing tool carried by said slide, means carried by said traveler and actuated by its reciprocation for side feeding said slide, means for reversing the side feed of the slide and infeeding the dressing tool carried thereby.

S. In improvements relating to the dressing of stone, a slideway, means for reciprocating said slideway, a slide upon said slideway, eccentric bearings carried by said slide, a shaft within said bearings, a dressing tool upon said shaft, means for rotating said dressing tool, means for infeeding said tool, by turning said bearings.

9. In improvements relating to the dressing of stone, a traveler, means for driving said traveler, means for reversing said traveler, a slideway upon said traveler, brackets suspended from said slideway, a slide upon each bracket, a dressing tool carried by each slide, means for rotating said dressing tool, means 'for side feeding each said slide along its bracket and the dressing tool carried thereby, means for infeeding each bracket and the slide and dressing tool carried thereby, means for reversing the side feed of each slide, a slide upon each said slideway, a dressing tool carried by said slide, means for rotating said dressing tool, means for side feeding said slide, means for reversing the side feed of said slide, means for infeeding said dressing tool.

10. In improvements relatingto the dressing of stone, a hydraulic ram, means for rotating said ram, a truck secured to said ram and carrying the stone, uprights each side of said stone, girders above said uprights, a Wheeled traveler resting upon said girders, means for driving said traveler, means for reversing said traveler, a slide- Way upon said traveler, brackets suspended from said slidevvay, a slide upon each bracket, a dressing tool carried by each slide, means for rotating each said dressing tool, a slide upon aforesaid slidevvay, a dressing tool carried by said slide, means for rotating said dressing tool, means carried by said traveler and actuated by its reciprocation for side feeding each of aforesaid slides synchronously, means carried by each of said brackets and actuated by the slides thereon for reversing the side feed of the bracket slides and infeeding the respective bracket, a` former adjacent to each bracket, means for guiding each Ybracket as it reciprocates With thek travelerk by said former, means carried by aforesaid slide upon the slidevvay for reversing the side feed of said slide and infeeding the dressing tool carried thereby. Y

In Witness whereof, We aliix our signatures, in the presence of tvvo Witnesses.

,MICHAEL WOODS.

Witnesses:

CECIL W. LE PLASTRIER, GEORGEV A. UREN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents., Washington, 2D. C. 

